摘要
本研究就有机栽培和化肥栽培的玉米 ,西红柿和其它作物 ,在营养体生长 ,经济产量以及对水分胁迫和病害的反应方面进行了比较。另外 ,本文在生理学分析方面采用几种新颖的数学方法。研究结果证明 ,尽管苗期生长不尽如意 ,但有机肥料促进根系的营养体生长以及生理活性 ,从而能使大多数作物的中后期光合活性增强。对切断叶的光合作用降低曲线的分析证实有机栽培的作物在彻底断水的情况下具有较强的光合活性维持能力。这与以前报道的水分胁迫回避性是一致的。因此可以下结论说 ,与化肥栽培的作物相比 ,有机栽培的作物其生理活性高 ,环境胁迫抗性强 ,可食部位的营养质量高 。
Organic and chemical fertilizers were applied to sweet corn, tomato and other crops to compare the growth, yield, physiological responses and resistance to water stress and diseases. Several mathematical approaches to physiological analysis were used in this research. Organic fertilizers promoted root growth and activity and enhanced photosynthesis in most crop plants at the later growth stages although the seedling growth was lower at the early stage. Analysis of declining photosynthetic curve with time in the excised corn leaves showed that leaves of corn plants fertilized with organic materials possessed a higher photosynthetic maintaining ability, which was consistent with the results of water stress avoidance. It is concluded that organic fertilized crop plants possess higher physiological activities and higher environmental stresses resistance with higher quality in the edible parts, but lower nutrient availability at the early stage usually limits the seedling growth, compared with the chemical fertilized control plants.
出处
《莱阳农学院学报》
2001年第4期248-258,共11页
Journal of Laiyang Agricultural College
